Well, here goes:

Loco: New body class 25 (low hanging fruit, surely?)

Then it gets a bit more blue-sky...

Coach: RTC Trib train auto-trailer

Wagon: John Summers iron ore hoppers

Given that there have been two versions of the RTC 24, and the somewhat fictional 28, there surely has to be a market for the trib train coaches?

And the John Summers wagons, which are similar to the ICI limestone ones, are a memory from childhood. I have no expectation that I'll ever see them in RTR. But it is a wish-list.

@maridurian

I did a 3D print 48DS for one of the little Japanese chassis plus a little bit of filing. DCC would be interesting to say the least at that size.

(https://github.com/EtchedPixels/3DPrint-NonCommercial/tree/main/48DS has the needed OpenSCAD files to generate the STL to print one)

We've had smallish 0-4-0 chassis even back into the 1970s that ran well (at least on electrofrogs). This probably belongs in the SPAM section but show what was possible with those chassis - and these are DCC converted.

A couple of Danygraig shed locos from Swansea



So they are definitely doable with DCC and modern technology!

Quote from: maridunian on February 24, 2026, 01:45:41 PMHalf a century ago Bachmann, Rivarossi and Arnold produced 0-4-0 locos that were often redeployed under British bodyshells from GEM etc.

Ten years ago Hornby added a Peckett 0-4-0 to their OO range, shortly followed by Hattons launching a similar sized Andrew Barclay.

Who wouldn't want at least one of those in N Gauge?

Sorry, Mike, but my hand is up

I realise that it is some time since a comment in this thread was last posted. My posting was back in February... However, perhaps I may be permitted to have a second bite of this particular cherry, after a lapse of some six months; maybe these three choices could be called my "second division"? My apologies to all those who think that I'm stretching too far the "minimal list" concept...

Locomotives - ex-GWR 2251 0-6-0 Collett goods: I know that Peco killed theirs but that was more than 15 years ago, and it's such a useful mixed-traffic loco for both mainline and branch use.

Passenger Coaches - ex-GWR pre-1935 Collett gangwayed stock, having a door to every passenger compartment. Very many of these coaches lasted well into the 1960s, well into the diesel-hydraulic era. If a range was under consideration, I'd suggest BTK/BSK, CK, TK/SK, and BCK, as a minimum to form basic passenger rakes..

Goods/non-passenger stock - ex-GWR/BR inside framed Siphon G. The (very occasionally available) Dapol example is a pre-1925 gas-lit vehicle. If anyone thinks that my inclusion of  an NPCCS example is inappropriate for the Goods category, may I instead suggest the INSIXFISH van, 80 of which were built at Swindon at the time of Nationalisation?

This has proved to be a very interesting thread, as it does reveal how very diverse are the tastes of N-Gauge modellers - one may not agree with many of these deep-felt wants, but it does show how much the manufacturers still have to do to satisfy their client base - even with our more "main-stream" wishes!